An existing TimeFinder customer migrated from a DMX-3 running Enginuity 5771 to a new VMAX array. They ask you to explain how the TimeFinder/Clone Copy on First Write (COFW) mechanism on the new VMAX array differs from their DMX-3 array.
What do you tell the customer?

A.
The VMAX array uses asynchronous COFW and the DMX-3 array uses synchronous COFW.

B.
Both the VMAX and DMX-3 arrays use synchronous COFW.

C.
The VMAX array uses synchronous COFW and the DMX-3 array uses asynchronous COFW.

D.
Both the VMAX and DMX-3 array use asynchronous COFW.